:root {
  --bg-1: #f8fbff;
  --bg-2: #dde8f3;
  --bg-3: #c0d2e4;
  --text: #0a1a2c;
  --muted: #3e5369;
  --line: #b7c9db;
  --card: rgba(255, 255, 255, 0.84);
  --primary: #0c4d86;
  --primary-soft: #2f6a9e;
  --accent: #78a6cc;
  --success: #136f44;
  --shadow: 0 18px 45px rgba(7, 20, 38, 0.18);
  --radius: 20px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

body {
  font-family: 'Space Grotesk', 'Segoe UI', sans-serif;
  color: var(--text);
  background:
    radial-gradient(1000px 500px at -10% -10%, #ffffff 0%, transparent 60%),
    radial-gradient(900px 460px at 120% 0%, #d9ecff 0%, transparent 62%),
    linear-gradient(170deg, var(--bg-1), var(--bg-2) 44%, var(--bg-3));
  min-height: 100vh;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.page-shell {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 80;
  backdrop-filter: blur(12px);
  background: rgba(244, 250, 255, 0.84);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  box-shadow: 0 7px 18px rgba(0, 0, 0, 0.2);
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.links a {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.95rem;
}

.links a.active {
  color: var(--primary);
}

.hero {
  padding: 4.5rem 0 3.5rem;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.5rem;
  align-items: center;
}

.hero-card,
.card {
  background: var(--card);
  border: 1px solid rgba(163, 187, 211, 0.7);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 2rem;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.32rem 0.7rem;
  border-radius: 999px;
  background: rgba(120, 166, 204, 0.16);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

h1,
h2,
h3 {
  font-family: 'Sora', 'Segoe UI', sans-serif;
  margin-top: 0;
}

h1 {
  margin: 1rem 0;
  font-size: clamp(2rem, 5vw, 3.3rem);
  line-height: 1.1;
}

p {
  color: var(--muted);
  line-height: 1.68;
}

.cli-block {
  margin: 1.35rem 0;
  background: #081625;
  color: #d8ecff;
  padding: 1rem 1.2rem;
  border-radius: 13px;
  border: 1px solid #183048;
  font-family: 'JetBrains Mono', Consolas, monospace;
  overflow-x: auto;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 0.74rem 1.1rem;
  font-weight: 700;
  font-size: 0.94rem;
}

.btn-primary {
  background: linear-gradient(180deg, var(--primary-soft), var(--primary));
  color: #f4fbff;
  box-shadow: 0 10px 20px rgba(13, 56, 102, 0.35);
}

.btn-subtle {
  background: rgba(255, 255, 255, 0.8);
  color: var(--primary);
  border-color: rgba(30, 91, 145, 0.2);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.2rem 0 0;
}

.card {
  padding: 1.2rem;
}

.card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.03rem;
}

.section {
  padding: 1.4rem 0 2.2rem;
}

.section h2 {
  font-size: clamp(1.5rem, 3vw, 2.05rem);
  margin-bottom: 0.6rem;
}

.table-wrap {
  overflow-x: auto;
  margin-top: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}

th,
td {
  padding: 0.8rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 0.94rem;
}

th {
  color: var(--primary);
  background: rgba(120, 166, 204, 0.15);
}

.footer {
  margin-top: 2.5rem;
  padding: 1.8rem 0 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.copy-row {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 0.45rem;
}

[data-tab-btn].active {
  background: linear-gradient(180deg, var(--primary-soft), var(--primary));
  color: #f4fbff;
  border-color: transparent;
}

.timeline {
  border-left: 2px solid rgba(24, 86, 139, 0.3);
  padding-left: 1rem;
  display: grid;
  gap: 1rem;
}

.timeline .card {
  border-radius: 14px;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .nav-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .links {
    gap: 0.65rem;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 3rem;
  }
}